icebox: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/icebox - from package: icebox

You may install the required package with command apt-get install {package}

Error in other languages:
icebox: bevel nie gevind nie
icebox: comandă negăsită
icebox: comando não encontrado
icebox: commande introuvable
icebox: command not found
icebox: käsku ei ole
icebox: không tìm thấy lệnh
icebox: komanda nerasta
icebox: Kommando nicht gefunden.
icebox: kommandot finns inte
icebox: komut yok
icebox: nie znaleziono polecenia
icebox: níor aimsíodh an t-ordú
icebox: no se encontró la orden
icebox: no s'ha trobat l'ordre
icebox: opdracht niet gevonden
icebox: parancs nem található
icebox: perintah tidak ditemukan
icebox: príkaz nenájdený
icebox: příkaz nenalezen
icebox: команда не найдена
icebox: командата не е открита
icebox: 命令找不到
icebox: コマンドが見つかりません